<script setup>
import {ref, reactive, computed} from "vue";
import {Edit, Lock, Message} from "@element-plus/icons-vue";
import router from "@/router/index.js";
import {get, post} from "@/net/index.js";

const active = ref(0)
const formRef = ref()
const codeTime = ref(0)

const form = reactive({
  email: '',
  code: '',
  password: '',
  password_repeat: ''
})

const validatorPassword = (rule, value, callback) => {
  if (value === '')
    callback(new Error("请再次输入密码"))
  else if (value !== form.password)
    callback(new Error("两次输入的密码不一致"))
  else callback()
}


const rules = {
  password: [
    {required: "true", message: '请输入密码', trigger: 'blur'},
    {min: 6, max: 20, message: '密码的长度要在6~20个字符之间', trigger: ['blur', 'change']}
  ],
  password_repeat: [
    {validator: validatorPassword, trigger: 'blur'},
  ],
  email: [
    {required: "true", message: '请输入邮件地址', trigger: 'blur'},
    {type: 'email', message: '请输入正确的邮箱地址', trigger: ['blur', 'change']}
  ],
  code: [
    {required: "true", message: '请输入验证码', trigger: ['blur', 'change']},
    {pattern: /^[0-9]{6}$/, message: '验证码必须是六位数字', trigger: 'blur'}
  ]
}


function askCode() {
  if (isEmailValid) {
    codeTime.value = 60
    get(`/api/auth/ask-code?email=${form.email}&type=register`, () => {
      ElMessage.success(`验证码已发送到您的邮箱：${form.email}，请注意查收`)
      setInterval(() => {
        codeTime.value--
      }, 1000)
    }, (message) => {
      ElMessage.warning(message)
      codeTime.value = 0
    })
  } else
    ElMessage.warning('验证码发送失败，请稍后再试')
}

const isEmailValid = computed(
    () => /^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$/.test(form.email)
)

function confirmReset() {
  formRef.value.validate(valid => {
    if (valid) {
      post('/api/auth/reset-confirm', {
        email: form.email,
        code: form.code
      }, () => {
        active.value++
      })
    }
  })
}

function doReset() {
  formRef.value.validate(valid => {
    if (valid) {
      post('/api/auth/reset-password',
          {...form},
          () => {
            ElMessage.success("密码重置成功，请重新登录")
            router.push('/')
          }
      )
    }
  })
}

</script>

<template>
  <div style="text-align: center">
    <div style="margin-top: 30px">
      <el-steps :active="active" finish-status="success" align-center>
        <el-step title="验证电子邮件"/>
        <el-step title="重新设定密码"/>
      </el-steps>
    </div>
    <div v-if="active === 0" style="margin: 0 20px">
      <div style="margin-top: 80px">
        <div style="font-size: 25px;font-weight: bold">重置密码</div>
        <div style="font-size: 14px;color: gray">请输入需要重置密码的电子邮件</div>
      </div>
      <div style="margin-top: 50px">
        <el-form :model="form" :rules="rules" ref="formRef">
          <el-form-item prop="email">
            <el-input v-model="form.email" type="email" placeholder="电子邮件地址">
              <template #prefix>
                <el-icon>
                  <Message/>
                </el-icon>
              </template>
            </el-input>
          </el-form-item>
          <el-form-item prop="code">
            <el-row :gutter="10" style="width: 100%">
              <el-col :span="17">
                <el-input v-model="form.code" type="text" maxlength="6" placeholder="请输入验证码">
                  <template #prefix>
                    <el-icon>
                      <Edit/>
                    </el-icon>
                  </template>
                </el-input>
              </el-col>
              <el-col :span="5">
                <el-button @click="askCode" :disabled=" !isEmailValid || codeTime>0" type="success">
                  {{ codeTime > 0 ? `请稍后${codeTime}秒` : '获取验证码' }}
                </el-button>
              </el-col>
            </el-row>
          </el-form-item>
        </el-form>
      </div>
      <div style="margin-top: 80px">
        <el-button type="warning" @click="confirmReset" style="width: 250px" plain>前往重置密码</el-button>
      </div>
    </div>
    <div v-if="active === 1" style="margin: 0 20px">
      <div style="margin-top: 80px">
        <div style="font-size: 25px;font-weight: bold">重置密码</div>
        <div style="font-size: 14px;color: gray">请填写你的新密码，务必牢记，防止丢失</div>
      </div>
      <div style="margin-top: 50px">
        <el-form :model="form" :rules="rules" ref="formRef">
          <el-form-item prop="password">
            <el-input v-model="form.password" type="password" maxlength="20" placeholder="密码">
              <template #prefix>
                <el-icon>
                  <Lock/>
                </el-icon>
              </template>
            </el-input>
          </el-form-item>
          <el-form-item prop="password_repeat">
            <el-input v-model="form.password_repeat" type="password" maxlength="20" placeholder="重复密码">
              <template #prefix>
                <el-icon>
                  <Lock/>
                </el-icon>
              </template>
            </el-input>
          </el-form-item>
        </el-form>
      </div>
      <div style="margin-top: 80px">
        <el-button type="danger" @click="doReset" style="width: 250px" plain>确认重置密码</el-button>
      </div>
    </div>
  </div>
</template>

<style scoped>

</style>